Brother FAX4750 Service Manual page 288

Assembly
Installing the Drum Unit Assembly
(with Toner Cartridge)
1
Unpack the drum unit assembly,
including the toner cartridge, and
gently rock it from side to side
five or six times to distribute the
toner evenly inside the cartridge.
To prevent damage to the drum, do not expose it to light for
longer than a few minutes.
2
Open the front cover of the
machine.
3
Insert the drum unit assembly
into the machine.
4
Close the front cover.
A S S E M B L Y A N D C O N N E C T I O N S 2 - 3